2 つのフラグメントListMovieFragment
とDetailMovieFragment
.
ListMovieFragment
に実装されているインターフェイスがありますMainActivity
。共有要素遷移を使用しています。の画像ビューをクリックするとListMovieFragment
、onMovieSelected
で呼び出されますMainActivity
。
作品からの移行ListMovieFragment
。
しかし、backボタンをクリックすると、からDetailMovieFragment
ListMovieFragment への遷移が機能しません。
ここに MainActivity があります。フラグメントにトランジションを設定するための組み合わせが間違っていると思います。
public class MainActivity extends AppCompatActivity implements ListMovieFragment.MovieSelectedListener {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
if(savedInstanceState == null) {
ListMovieFragment listMovieFragment = new ListMovieFragment();
FragmentTransaction fragmentTransaction = getSupportFragmentManager().beginTransaction();
fragmentTransaction.add(R.id.activity_main, listMovieFragment, ListMovieFragment.TAG);
fragmentTransaction.commit();
}
}
@Override
public void onMovieSelected(int movieId) {
DetailMovieFragment detailMovieFragment =
(DetailMovieFragment)getSupportFragmentManager().findFragmentByTag(DetailMovieFragment.TAG);
/* Create a new DetailMovieFragment if not exits */
if(detailMovieFragment == null) {
detailMovieFragment = new DetailMovieFragment();
}
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
/* Get the fragments that will be using the transition */
ListMovieFragment listMovieFragment =
(ListMovieFragment)getSupportFragmentManager().findFragmentByTag(ListMovieFragment.TAG);
if(listMovieFragment == null) {
listMovieFragment = new ListMovieFragment();
}
/* Inflate the transition */
Transition changeTransition = TransitionInflater
.from(MainActivity.this)
.inflateTransition(R.transition.change_image_transform);
/* source fragment (ListMovieFragment) */
listMovieFragment.setExitTransition(new Explode());
listMovieFragment.setSharedElementReturnTransition(changeTransition);
/* Destination fragment (DetailMovieFragment) */
detailMovieFragment.setSharedElementEnterTransition(changeTransition);
detailMovieFragment.setEnterTransition(new Explode());
/* Get the shared imageview from the source fragment (MovieListFragment) */
final ImageView ivSharedImage = (ImageView) findViewById(R.id.ivMoviePoster);
FragmentTransaction fragmentTransaction = getSupportFragmentManager().beginTransaction();
fragmentTransaction.replace(R.id.activity_main, detailMovieFragment, DetailMovieFragment.TAG);
fragmentTransaction.addToBackStack(DetailMovieFragment.TAG);
fragmentTransaction.addSharedElement(ivSharedImage, getResources().getString(R.string.transition_poster_image));
fragmentTransaction.commit();
}
else {
FragmentTransaction fragmentTransaction = getSupportFragmentManager().beginTransaction();
fragmentTransaction.replace(R.id.activity_main, detailMovieFragment, DetailMovieFragment.TAG);
fragmentTransaction.addToBackStack(DetailMovieFragment.TAG);
fragmentTransaction.commit();
}
}
@Override
public void onBackPressed() {
if (getSupportFragmentManager().getBackStackEntryCount() > 0) {
getSupportFragmentManager().popBackStack();
}
else {
super.onBackPressed();
}
}
}
私のトランジションxmlファイル:
<transitionSet>
<changeBounds />
</transitionSet>
fragment_list
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:paddingTop="18dp"
android:paddingBottom="6dp">
<ImageView
android:id="@+id/ivMoviePoster"
android:layout_width="184dp"
android:layout_height="276dp"
android:adjustViewBounds="true"
android:scaleType="fitXY"
android:transitionName="@string/transition_poster_image"/>
</LinearLayout>
fragment_detail
<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context="me.androidbox.fragmenttransitions.detail.DetailMovieFragment">
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:gravity="center"
android:text="The Movie App"
android:textSize="28sp"
android:fontFamily="sans-serif-light"
android:textColor="@android:color/holo_blue_dark"/>
<ImageView
android:id="@+id/ivMoviePoster"
android:layout_width="92dp"
android:layout_height="138dp"
android:layout_marginEnd="16dp"
android:layout_marginTop="112dp"
android:adjustViewBounds="true"
android:scaleType="fitXY"
android:layout_gravity="end"
android:transitionName="@string/transition_poster_image"/>
</FrameLayout>
activity_main
<?xml version="1.0" encoding="utf-8"?>
<FrameLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:id="@+id/activity_main"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context="me.androidbox.fragmenttransitions.activity.MainActivity">
</FrameLayout>